Exponents+2A

Shareesa

The value of an exponent is positive. Sometimes true 42 = 4*4 4-2 = 1/4 -2, 1/4*4, 1/16

4. the value of an exponent can be positive or negative. Sometimes True 42 = 4*4 4-2 = 1/4 -2, 1/4*4, 1/16


 * Sophia**

o Sometimes True 2^2 = 1*2*2 2^-2 = 1÷2÷2
 * 14.** The value of an exponent is positive.

o Always True 2^2 = 1*2*2 2^-2 = 1÷2÷2
 * 15.** The value of an exponent can be positive or negative.

2^3 = 8 = 1/(2^-3)


 * Kimberly**

14: Sometimes True -There are + and - exponents

15: Always True -Look at problem 14

Marjorie

When you have negative exponents, if the variable/number with the negative exponents is on the top, them move the variable/number to the bottom and change the negative exponent to positive exponent. If the variable/number with the negative exponent is on the bottom, them move the variable/number to the top and change the negative exponent to a possitive exponent. for example :

we all agree that positive exponents are easy to solve  3^2 = 3 x 3 = 9 but what happen when we have this: 3 ^ -2 3^-2 you have to move the variable/number with the negative exponent to the bottom 1 / ( 3^2) now we have positive numbers 1/ (3^2) = 1/9 (3^2 = 9) 1/9 them we use the calculator to solve it 1/9 = .1111111111 .1111111111 = 1/9 = 1 / (3^2) = 3^-2 so you can now say that 3^-2 = .1111111111

Lenea Harris FX- 46

Jim does not understand negative exponenets. He thinks that 4-2is a negative number. Thu volunteers to help him out. SHe begins with x3/ x5. "Simplify this two ways," she says. "First, use the subtraction rule for a division problem with exponents. Second, write out the meaning of x3/x5 and simplify." Write out what Thu said to do and then substitute 4 in the place of x to convince Jim that 4-2= 1/16.

x3/x5 = x-2 Use the subtraction rule for a division problem with exponents; When dividng two numbers with exponents subtract the denomenator's exponent from the numerator's exponent.

__x * x * x__ = __x3__ = x-2 Write out the meaning of x3/ x5. x*x*x*x*x x5

x = 4 Substitute

__4*4*4__ = __64__ = __1__ 4*4*4*4*4 1024 16

Sophia Moreno
 * FX-55**

a) X^3 = 27 X = 3

b) X^4 = 16 X = 2

c) X^3 = -125 X = -5

NOTES: Positive exponents: # of times coefficient is multiplied from 1 10^3

1*10*10*10

Scott ThayresFX-10: Write each of the following in it's smallest base. A) 64- 2^6B) 8^3- 2^9C) 25^x- 5^2xD) 16^(x+1)- 2^(4x+4)E) 16/81- ?F) 81^2- 3^8 FX-32: Judy does not belive that x^0 could possibly have any meaning, and if it does, she can't remember it anyway. Kelly says shes is sure that x^0=1 and bets her other team members that she can convince Judy. She starts with the following problems.

x^10/x^3 = x^7 x^5/x^3 = x^2 x^4/x^3 = x^1

A) top exponent minus bottom exponent = valued exponentB) x^3/x^3 = x^0C) equals 1D) When there is a 0 exponent, think of it as nothing is there. Your not multiplying the number by itself because there is no amount of times.

